PERMIAN BEDS OF SOUTH LANCASHIRE. 39 



mian and trias beds to the south^ are brought up again by 

 a fault running somewhere between Mr. Greenes dye-works 

 in Old Garratt and Messrs. Fryer^s works in Chester Street, 

 Oxford E/Oad. This is one of the most interesting facts 

 connected with the geology of Manchester that has come 

 under my notice,, and shows the desirability of continuing 

 all the great lines of fracture in the coal-measures over 

 the trias, to indicate the most likely places where that 

 and the underlying permian deposits can be perforated, 

 and coal-measures met with under them. 



The remarkable features in this section are the great 

 thicknesses of the red marls and limestones, and the con- 

 glomerate-beds, the one reaching 220 feet, and the other 43 

 feet. At Collyhurst and Newtown, these beds, described 

 in my former paper, would not reach more than 120 feet and 

 I foot 6 inches respectively. On the other hand, the soft 

 red sandstone, which at CoUyhurst was 320 feet, if repre- 

 sented at aU in Chorlton-on-Medlock in the compact red 

 and white sandstone, was only 20 feet in thickness. The 

 lower permian beds of Astley, containing quartz, pebbles, 

 and coal-plants, were not met with. This was also the case 

 in the Seedley section *, to which this section bears the 

 greatest resemblance of any in the immediate vicinity of 

 Manchester. 



Ordsal Section, 



In my two papers previously alluded to, namely, those 

 printed in Vol. XII. of the Society^s Memoirs and in 

 the first volume of the Transactions of the Manchester 

 Geological Society, the various bores made in the trias 

 around the city and the adjoining borough of Salford are, so 

 far as they could be obtained, given. Amongst these is the 

 well of our worthy President, Dr. Joule, F.R.S., near Albert 

 Bridge. He was so kind as to oblige me with the section 

 of the strata there met with. They were as foUows : — 



* Vol. xiv. (Second Series) of the Society's Memoirs, p. 103. 



